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PDF 3512 Data sheet ( Hoja de datos )
| Número de pieza | 3512 | |
| Descripción | PC POWER SUPPLY SUPERVISORS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de 3512 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
3512
PC POWER SUPPLY
SUPERVISORS
CMOS IC
DESCRIPTION
The UTC 3512 is specially designed for switching power supply
system. It provides over-voltage protection, over-current protection,
under-voltage protection, on/off control and power good signal
generating.
OVP/UVP (Over/Under-Voltage Protection) monitors 3.3V, 5V
and double 12V to protect our power supply and PC, FPO goes to
high when one of these supply voltages exceeds their normal
operation voltage range.
OCP (Over Current Protection) monitors IS33, IS5, IS12 input
current. The voltage difference across external current shunt is
used for OCP functions. An external resistor which is connected
between the RI pin and the GND pin can be used to adjust
protection threshold. To achieve better immunity for lighting surge
glitch and to prevent accidental power shut down during dynamic
loading condition, the de-bounce time for UVP/OCP is 73us
respectively. The deglitch time for OVP is 73uS for better noise
immunity.
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The power supply is turned on after 38mS de-bounce time when
PSON signal is set from high to low. To turn off power supply,
PSON signal is set from low to high and the de-bounce time is
115mS. When PGI input voltage level is lower than the internal
1.15V reference voltage, after 73uS de-bounce time, the PGO
signal is pulled low.
FEATURES
* Over/Under-voltage protection for 3.3V, 5V, and two 12V
* Over-current protection for 3.3V, 5V, and two 12V
* PGO and FPO pins with open drain output stage
* 300mS power good delay from PGI to PGO
* 75mS delay for 3.3V, 5V and 12V power turn on
* 2.8mS delay for PSON control to FPO turn off
* 38mS / 115mS PSON on/off de-bounce time
* 73uS width noise deglitches
* 73uS de-bounce time for UVP and OCP
* Wide supply voltage range
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
3512-D14-T
3512L-D14-T
3512-S14-R
3512L-S14-R
3512-S14-T
3512L-S14-T
Package
DIP-14
SOP-14
SOP-14
DIP-14
SOP-14
*Pb-free plating product number: 3512L
Packing
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 9
QW-R502-073,A
1 page  
3512
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
VDD -0.3 ~ 16 V
Input Voltage
PSON, VS33, VS5, PGI
VIN
-0.3 ~ 8
V
Output Voltage
FPO
PGO
VOUT
-0.3 ~ 16
-0.3 ~ 8
V
Power Dissipation
PD 400 mW
Operating Temperature
TOPR
-40 ~ +85
Storage Temperature
TSTG
-55 ~ +150
Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Stresses above those listed may cause permanent damage to the device.
RECOMMENDED OPERATING CONDITIONS
PARAMETER
DC Supply Voltage
Input Voltage
PSON, VS33, VS5, IS33, IS5, PGI
Input Voltage
VS12,VS12B, IS12
Output Voltage
FPO
PGO
Output Sink Current
FPO
PGO
Supply Voltage Rising Time
See Note
Output Current RI
Note VDD rising and falling slew rate must be less than 14V/mS.
SYMBOL
VDD
VIN
VOUT
IO(SINK)
tR
IRI
ELECTRICAL CHARACTERISTICS (VDD=12V, TA=25 )
MIN
4
1
12.5
MAX
15
7
15
15
7
20
10
62.5
UNIT
V
V
V
mA
mS
µA
PARAMETER
SYMBOL TEST CONDITIONS
UNDER-VOLTAGE AND PGI, PGO
Input Threshold Voltage PGI
Under-voltage protect VS33
Under-voltage protect VS5
Under-voltage protect VS12, VS12B
Low Level Output Voltage (PGO)
Leakage Current (PGO)
Under-voltage Enable Delay Time
VPGI
VUVp
VOL
ILEAK
VDD = 12V ISINK =10mA
PGO = 5V
Timing PG Delay
Noise Deglitch Time
PGI to PGO
PGI to PGO
tPG
Timing UVP to Protection (FPO)
TUVP VS33,VS5, VS12,VS12B
OVER-VOLTAGE AND OVER-CURRENT PROTECTION
Over-Voltage Protection
VS33
Over-Voltage Protection
VS5
VOVP
Over-Voltage Protection
VS12, VS12B
Ratio of Current Sense Sink Current to Current
Sense Setting Pin (RI) Source Current
IREF
RI = 30 ΚΩ,
0.1% Resistor
Current Source Reference Voltage
OCP Comparator Input Offset Voltage
Low Level Output Voltage (FPO)
Leakage Current (FPO)
Timing OVP to Protection
Timing OCP to Protection
VREF
VI(OFF)
VOL
ILEAK
TOVP
TOCP
ISINK =20mA
V(FPO) = 5V
MIN
1.1
2.6
4.0
9.4
49
200
150
3.7
5.7
13.2
7.6
1.1
-5
TYP
1.15
2.8
4.2
9.9
75
300
250
73
3.9
6.1
13.8
8
1.15
73
73
MAX UNIT
1.2 V
3.0
4.4 V
10.4
0.7 V
5 µA
114 mS
450 mS
350 µS
µS
4.1
6.5 V
14.4
8.4
1.2 V
5 mV
0.7 V
5 µA
µS
µS
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 9
QW-R502-073,A
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet 3512.PDF ] | |
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